This is is a set of Sterling Silver Lumine All Weather. Key Details & FeaturesDesign & Fit: These feature a slim, which makes them perfect for stacked layering. Material: Crafted using flexible, high-quality handcrafted sterling silver. Functionality: They are completely waterproof, TSA-friendly, and soundless, meaning they won’t make any clinking noises as you move your wrists. They are designed to be lightweight and comfortable enough to wear during daily routines, swimming, or working out.